<?php /* ** Copyright (C) 2001-2025 Zabbix SIA ** ** This program is free software: you can redistribute it and/or modify it under the terms of ** the GNU Affero General Public License as published by the Free Software Foundation, version 3. ** ** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; ** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ** See the GNU Affero General Public License for more details. ** ** You should have received a copy of the GNU Affero General Public License along with this program. ** If not, see <https://www.gnu.org/licenses/>. **/ /** * A parser for Prometheus output. */ class CPrometheusOutputParser extends CParser { /** * @var array */ private $macro_parsers = []; private $options = [ 'usermacros' => false, 'lldmacros' => false ]; public function __construct($options = []) { $this->options = $options + $this->options; if ($this->options['usermacros']) { array_push($this->macro_parsers, new CUserMacroParser, new CUserMacroFunctionParser); } if ($this->options['lldmacros']) { array_push($this->macro_parsers, new CLLDMacroParser, new CLLDMacroFunctionParser); } } /** * Parse the given source string. * * @param string $source Source string that needs to be parsed. * @param int $pos Position offset. */ public function parse($source, $pos = 0) { $this->length = 0; $this->match = ''; $p = $pos; if (preg_match('/^[a-zA-Z_][a-zA-Z0-9_]*/', substr($source, $p), $matches)) { $p += strlen($matches[0]); } else { foreach ($this->macro_parsers as $macro_parser) { if ($macro_parser->parse($source, $p) != self::PARSE_FAIL) { $p += $macro_parser->getLength(); break; } } } if ($p == $pos) { return self::PARSE_FAIL; } $this->length = $p - $pos; $this->match = substr($source, $pos, $this->length); return isset($source[$p]) ? self::PARSE_SUCCESS_CONT : self::PARSE_SUCCESS; } }